Torch



May 7; 1929.

AL.. woLF TORCH Filed No'v. 2, 1925 Aim 4"Patented May Tf', 1929.

unirsi); sra

` ,nist-s Fics',

LINUS wenn, er marianna, Immers.

TORCH.

Application fue mvemaer a, i925. serial in. scava This invention relates to torches forV various purposes, such as blow torches using gas of a suitable character to produce the desired flame.

Generally stated, the object of the invention is to provide a novel and improved construction of blow torch, `having novel elements and features of construction tending to improve theaction and efliciency of le the torch', and te render the same more safe in use.

it is -also an object to provide certain details and features of construction and combinations tending to increase the general ehticiency and the desirability of a' blow torch of this particular character.

To these and other useful ends, the invention consists of matters hereinafter set forth and claimed and shown inthe accompanying drawings, in which Fig. 1 is a side elevation of a blow torch embodying the principles of the invention.

Fig. 2 is a longitudinal section on line 2-2 in Fig. 1. 4

Fig. 3 is an enlarged detail longitudinal section on line 3--3 in Fig. 2.

As thus illustrated, the invention comprises a handle 1 having a hollow member or tube 2 fixed therein, the rear end of the tube being threaded at 3, and a collar or coupling 4 being in engagement therewith to'couple the valve body 5 thereto.

This valve body has a needle valve 6, and

thev gas, of any suitable character, from any suitable source,

is conducted through the passage 7 past the point of the needle valve, then through the passage 8 to the tube 2 extending longitudinally through the handle. The` reducer coupling 9 connects the threaded outer end of the tube 2 with a smaller tube 10, which latter has a discharge tip or nozzle 11 screwed-upon its outer end. A relatively short tube 12 having its inner end closed and its outer end threaded into the tip or ings 13, within the bore of the tube 10, so that the gas-or gaseous.l mixture of any suitable character must pass from the tube 10, through the openings 13 to the interior of the tube 12,"before` escaping throu h the final discharge passage or orifice 14 ormed in the end of the nozzle 11 as shown. Thus dirt and other impurities are held back and kept from clogging the small discharge passage `14:', in a manner that will be readily grooved nozzle 11 is provided laterally with ope'nf understood, the laterally apertured tube 12 serving as a sort of filter or screen for this purpose.

The mixing nozzle 15 is in the nature of ,a comparatively large tube as shown,fhaving rearward extending arms 16 provided withA jaws 17 -to clamp the tube 2, a sleeve 18 of asbestos being interposed between said Jaws and the said tube. Stove bolts 19 are inserted through the lugs or ears 2O formed on the sides'of said jaws, whereby tube 2 and its covering '18 of asbestos are firmly clamped in place as shown. The outer end of the mixing nozzle 15 is 'flanged and bent inwardly at 21.

Thus the elements when combined, formed as described, form a blow torch for use in any desired manner. The asbestos 18 prevents the heat of the flame from being transmitted back through the nozzle 15 and the arm 16 and the'jaws 17 to the tube 2, andprevents the latter from being heated. The flange 21 tends to prevent the flame from jumping and insures proper mixture beltween the end of tip 11 and the outlet of the mixing nozzle 15, and as previously explained, the tube 12 tends to prevent impurities from passing outwardly into the flame and serves as a filter or screen for this purpose. Furthermore, theV mixing nozzle 15 is long enough to insure proper mixing of the gas and airA for complete combustion, whereby the flame is a distance from the tip 11 and will not tend to flash back, and will not heat the tip, life of the torch. l f

Anysuitable gas can be employed, or mixture of gases, and the invention is not limited` to any particular kind of gas or mixture of gases, nor to any particular use of the torch, asit may be used in various ways and for various purposes without departing from the spirit of the invention.

thus resulting in longer It will be understood, ofcourse, that the mixing tube 15 is o en at both ends thereof, so that air enters etween the arm 16 and passes through the nozzle/15 where it is mixed with thegas discharged from the orifice 14 of the tube 11, whereby the mixture of gas .and air is then discharged from the outlet of the mixing nozzle, which outlet is restricted b the flange 21 previously mentioned, as shown and described, and for the purposes set forth.

Without disclosing anything, and. Without prejudice to any novelty disclosed, what I claim as my invention is:

' 1. In a blow torch, the combination of ,a handle, a feed nozzle having a tip, suitably7 connected to a source of gassupply throng said handle, a mixing nozzle enclosing said tip, said mixing nozzle being open at both ends tliereof,-a reducer coupling in an open space between said mixing nozzle and the handle and supporting said feed nozzle, and means separate from said reducer and rigidly coiinecting said mixing nozzle with said handle, said tip being located between the two ends of the mixing nozzle, thereby forming a blow torch', said coupling being longitudinally and forming clamping jaws to removably mount the mixing nozzle on heating the gas passage the` connection between the tip and the handle, with tubular insulation interposed between said means and connection, to prevent heat from the mixing nozzle from between the tip and the source of supply.

3. In a blow torch, the combination of a thereby minces tip anda source of gas supply connected thereto, and a mixing nozzle enclosing the tip, said nozzle having a straight cylindrical outer end portion-formed with an inturned right-angle annular flange at its outlet, to provide a restricted round outlet for the nozzle, tending to prevent jumping of the flame, and to insure proper mixture between the tip, and the outlet of the nozzle,`and

having -a funnel shaped inlet portion tapering into said cylindrical portion, the tip being disposed within the tapering portion..

4. In a blow torch,

cessible reducer coupling forming part of a connection between the tip and handle, a mixing nozzle enclosing the tip, and means independent ot' said coupliig rigidly connecting the mixing nozzle with said handle, so that said tip can be removed if necessary or desirable without disconnecting said mixing nozzle from said handle, with the voutlet of said mixing nozzle some distance from the tip, thereby assuring complete combustion, and whereby the flame is a distance from the tip, to prevent the flame from flashing back, and to prevent heating of the tip, thereby to insure longer life of the torch.

Specification signed this 28th day of October, 1925.

LINUS WOLF.

Y the combination of Aa handle and gus nozzle tip, with an ac- 

